b) 5,25 x 18 - 5,25 x 2 - 5,25 x 6

= 5,25 x ( 18 - 2 - 6 )

= 5,25 x 10 

= 52,5

d) 46 - 38, 29 + 18,29

= 46 + ( 38,29 - 18,29)

= 46 + 20 

= 66

a 290

b 5,25x(18-2-6)=5,25x10=52.5

c 28,75

d 26

mình doán đại đó nếu đúng thì tisk nhé

ngu

=5,25 x (18-2-6)
=5,25 x   10
=   52,5
Cái đề bài hay quá bạn ạ

=5,25 x (18-2-6)
=5,25 x   10
=   52,5

= 75% * 2,5 + 25%*2,5 -2,5

= (75%+25%) *2,5 -2,5

=100%*2,5 -2,5

=2,5 - 2,5

=0

a: =6+5,25=11,25

b: =92,5:37-15,24

=2,5-15,24

=-12,74

c: =56,7:2,5+10,17

=22,68+10,17

=32,85

d: =5,67:3+2015

=1,89+2015

=2016,89

a/\(4,19\times50-132:\dfrac{2}{3}\)
\(=209,5-198\)
\(=11,5\)
b/\(637,38:18\times2,5\)
\(=35,41\times2,5\)
\(=88,525\)
c/\(56,32-13,4\times2,4\)
\(=56,32-32,16\)
\(=24,16\)
d/\(\dfrac{2}{5}:\left(\dfrac{4}{5}-\dfrac{1}{2}\right)\)
\(=\dfrac{2}{5}:\dfrac{3}{10}\)
\(=\dfrac{4}{3}\)

`a, 16,39 + 5,25 - 10,39`

`=(16,39-10,39)+5,25`

`= 6+5,39`

`=11,39`    

`b, ( 161,4 - 68,9 ): 37 -15,24`

`=92,5: 37 -15,24`

`=2,5-15,24`

`=-12,74`

a.\(16,39+5,25-10,39\)
\(=\left(16,39-10,39\right)+5,25\)
\(=6+5,25=11,25\)
b.\(\left(161,4-68,9\right):37-15,24\)
\(=92,5:37-15,24\)
\(=2,5-15,24\)
\(=-12,74\)